[Reinserting loosened bonded bridges].

203 bonded bridges were reinserted under standardized conditions. In 44 cases there was a loss of primary retention and in another 22 cases the bridges were removed for repair of a pontic. The bridges reinserted after loss of primary retention were significantly less successful (26%) than the bridges with primary retention (87%). The success rates of the bridges reinserted after deliberate removal (91%) was significantly higher than that of the bridges reinserted after loss of primary retention (48%).